[PATCH] D98866: [KnownBits] Add knownbits analysis for mulhs/mulu 'multiply high' instructions

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Cheers - there's a sort of convergence going on that KnownBits function names match APInt (although APInt doesn't have any mulh methods) - not sure about operators though. I've been burnt in the past with the & operator as I thought it would be to determine common bits......


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D98866/new/

https://reviews.llvm.org/D98866